
Monday 2004-03-22 Monument Valley
The floor is largely Cutler Red siltstone or its sand deposited by the rivers that carved the valley. The valley's vivid red colour comes from iron oxide exposed in the weathered siltstone. The darker, blue-gray rocks in the valley get their colour from manganese oxide.
The floor is largely Cutler Red siltstone or its sand deposited by the rivers that carved the valley. The valley's vivid red colour comes from iron oxide exposed in the weathered siltstone. The darker, blue-gray rocks in the valley get their colour from manganese oxide.